convex:
Title III firearms (fully automatic) manufactured before 1986 are completely legal for civilian ownership, provided you have the requisite Tax Stamp from the Treasury Department; and a "letter of approval" from the Chief Law Enforcement Officer (CLEO) where you reside. With few exceptions, most states also allow ownership with CLEO approval.
Over 225,000 fully automatic firearms are legally civilian owned in the US. Only one has ever been involved in the commision of a crime: An illegal transfer by, of all people, a police officer.
Suppressors, commonly (and erroneously) referred to as "silencers", are also legal for civilian ownership (with CLEO approval). They are identified with their own serial number, and also require a Tax Stamp. If an individual owns legal Title III firearms, having suppressors for some of them isn't as bizarre as it may seem - firing noise is kept to easily manageable levels; and long range accuracy is actually improved with some models (Uzi and MP5, for example).
The Heckler & Koch MP5, in all it's various models and calibers, is an absolute pleasure to shoot. It's well balanced, extremely accurate in 2 - 3 shot bursts, and utterly reliable.
For those who are unaware, Elian Gonzalez got an "up close" look at the business end of one - refer to the now famous photo . . .
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Current collection:
Ruger Mk II Government Model (.22 LR)
Davis derringer (.32 ACP)
EAA Windicator (.38 Spl.)
S&W Model 63 (.357 Mag.)
Ruger GP-100 (.357 Mag.)
Taurus PT-101 (.40 S&W)
EAA Witness Compact (.45 ACP)
Ruger 10/22 (.22 LR) w/ 3x9 Burris 'scope
Colt AR-15 Competition HBAR (.223 Rem.) w/ Leupold 4x16 'scope
Romanian AK-47 (7.62x39) w/ 6x 'scope
Marlin 336 (.30-30)
Mossberg 500 (12 Ga)
T/C Contender -
16" Hunter barrel (.223 Rem.) w/ 4x16 Burris 'scope
10" bull barrel (.44 Mag.)
And a Dillon RL-550 reloading press to feed most of the above . . .